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Evaluation Of Salmon Passage Behavior In Relation To Fishway Modifications At Bonneville Dam – 2013-2014 Item Info
- Title:
- Evaluation Of Salmon Passage Behavior In Relation To Fishway Modifications At Bonneville Dam – 2013-2014
- Report Type:
- Technical Report
- Date:
- 2015
- Authors:
- Johnson, E.L.; Clabough, T.S.; Keefer, M.L.; Caudill, C.C.; Lee, S.R.; Garnett, J.; Layng, L.; Noyes, C.; Dick, T.; Jepson, M.A.; Burke, B.J.; Frick, K.E.
- Affiliations:
- Fish and Wildlife Sciences, University of Idaho; Fish Ecology Division, Northwest Fisheries Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration
- Report Number:
- 2015-6
- Publisher:
- University of Idaho
- Funder:
- U.S. Army Corps of Engineers, Portland District
- Abstract:
- In 2013 and 2014, we evaluated the passage and migration behavior of radio-tagged spring and summer Chinook salmon (Oncorhynchus tshawytscha) and sockeye salmon (O. nerka) in relation to the installation of the Lamprey Flume System (LFS) at the north downstream entrance (NDE) of the powerhouse 2 (PH2) fishway at Bonneville Dam. We also conducted a fourth year of radiotelemetry studies of spring–summer Chinook salmon at Bonneville Dam to evaluate if modifications made at the Cascades Island (CI) fishway in winter 2008-2009 to facilitate passage of adult Pacific lamprey (Entosphenus tridentatus) and improve hydraulics at the entrance for salmon adversely affected passage of adult salmon. Our primary study objective was to compare passage times and behaviors from pre-modification years to those from post-modification years using a set of 5-7 quantitative passage metrics while considering inter-annual variation in environmental, operational, and ecological conditions. The metrics included: entrance efficiency, exit ratio, approach-to-entry time, entry-to-ladder base time, and proportion of adults requiring > 1 hour to pass these segments. We also compared behaviors at NDE and CI to similar sites: the PH2 south downstream entrance (SDE) and Bradford-Island B-Branch entrance, respectively.
- Species:
- Chinook salmon, Oncorhynchus tshawytscha sockeye salmon, Oncorhynchus nerka Pacific lamprey, Entosphenus tridentatus
- Location:
- Bonneville Dam; Columbia River; Cascades Island
- Subjects:
- salmonids Federal Columbia River Power System FCPRS radiotelemetry passage times migration fishways Lamprey Flume System
- Source:
- University of Idaho, Fish Ecology Research Lab
- Original Filename:
- 2015-06-CK-SK-passage-in-relation-to-fishway-modifications-Bonneville-2013-2014.pdf
- Format:
- application/pdf
Source
- Preferred Citation:
- "Evaluation Of Salmon Passage Behavior In Relation To Fishway Modifications At Bonneville Dam – 2013-2014", Adult Salmon and Steelhead Migration Studies: 1996-2014, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/ferl/items/ferl-tr-2015-6.html
Rights
- Rights:
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